Modalities and Multimodalities

From the reviews:

"This is mainly an introductory textbook on modal logic containing, apart from standard topics, some very important recent material which is not regularly included in other textbooks. [...] It is important to note that several of the different topics dealt with in the book are accompanied by philosophical remarks."
Max A. Freund (San José), taken from his review of the Italian version
Modalità e Multimodalità

“This revised work constitutes an introduction to standard topics in modal logic. There are other sections presenting valuable material not generally included in elementary textbooks on modal logic … . The book is written in a clear and agreeable style and useful exercises and references for further reading are given at the end of each chapter. … Due to all these features, the book is well suited for an introductory course in modal logic or as supplementary reading in an intermediate logic course.” (Max A. Freund, Zentralblatt MATH, Vol. 1210, 2011)